[Hereditary bradykinin angioedema. Case report].

Area of Science:

• Genetics
• Immunology
• Vascular Biology

Background:

• Hereditary angioedema (HAE) is an autosomal dominant disorder linked to elevated bradykinin levels.
• Diagnosis relies on clinical presentation and laboratory tests, with classification based on C1-inhibitor (C1-INH) enzyme levels.
• Management strategies include short-term treatments, long-term prophylaxis, and crisis prevention.

Observation:

• A 40-year-old female presented with persistent labial edema unresponsive to corticosteroids.
• Laboratory investigations revealed decreased levels of IgE, C4, and C1 esterase inhibitors.
• The patient was on danazol for prophylaxis and fresh frozen plasma for acute episodes.

Findings:

• The patient's presentation and laboratory results are consistent with hereditary angioedema.
• The case highlights the importance of considering HAE in patients with recurrent angioedema.
• Confirmation of low C1-INH levels is key in diagnosing HAE types.

Implications:

• Timely diagnosis and effective management of HAE are essential to prevent severe complications.
• Personalized treatment plans, including prophylactic and acute therapies, significantly improve quality of life for HAE patients.
• Further research into HAE pathogenesis and novel therapeutic targets is warranted.